My cousin [30F] thinks I [34F] tried to overshadow her at her wedding. She said the dress I wore was too fancy.

I attended my cousin’s wedding 2 weeks ago. The wedding and reception was held at a fancy hotel and I thought I should dress appropriately. The dress I wore was a red, ankle length, lace dress. I thought it was formal, elegant, and it does not look like a wedding dress at all. My cousin didn’t have any specific dress code for me. Although I am not in her bridal party officially, we are pretty close and I helped out with the wedding preparations and logistics. Everything went smoothly, the bride looked amazing, the decorations were beautiful, the food was good.
After the wedding, her mom came up to me and said my cousin was pretty upset at me because she thought I was dressed too nicely and I overshadowed her at her own wedding. Apparently, I made her cry. I feel terrible, but at the same time I also don’t think it’s true at all. My cousin looked stunning during the wedding and my dress didn’t look like a wedding dress.
The next day my cousin posted a passive aggressive FB status about arrogant people who try to upstage the bride and how you can’t trust people. I’m pretty hurt because I did not intend to do that. I privately messaged her saying that I never intended to do that and she didn’t reply. This whole situation is turning into a family feud. My aunt (cousin’s mom) is no longer speaking to mom and cancelled the trip that they planned together to visit my elderly grandmother who lives in another country. She told my mom that she didn’t raise her daughters right. They both cancelled on my nephew’s 1st birthday party when they initially rsvped yes. Should I reach out and apologize again? What can I do to resolve this situation? I feel awful.

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tl;dr: Cousin thinks I upstaged her at her wedding because I dressed too nicely. She and her mom are no longer speaking to my family.


Source.